Okay, good.
As for unique names instead of numbers … again personal preference, most sites will check if a username is already in use anyway, but still use a userID for the code to identify someone, I guess its just easier to give someone a number.
In my Member table I have…
- id (pk)(cannot change)
- email (uk)
- username (uk)(cannot change)
I tend to keep my userIDs hidden on my site, as you say Sitepoint decided to show theirs not sure what the benefit on that would be.
I agree with you…
Yes Maam, suggestions addressed
Cool! 
Thanks for the help!!
Debbie